scholarly journals Computer intelligent dynamic simulation and optimization for structural platform of water treatment subsystem on the spacecraft

2021 ◽  
Vol 2083 (3) ◽  
pp. 032003
Author(s):  
Xiaoxin Wang ◽  
Tianfeng Sun ◽  
Feifei Jiao
Keyword(s):  
Carbon Fiber Composites ◽  
Optimized Design ◽  
Sinusoidal Vibration ◽  
Maximum Acceleration ◽  
Response Condition ◽  
Simulation And Optimization ◽  
Load Response ◽  
Simulation Calculation ◽  
Before And After ◽  
Honeycomb Sandwich Structure

Abstract In order to reduce the load response condition of space-borne equipment, an optimized design scheme of carbon fiber composites sandwich panel was proposed in this paper. The state before and after optimization was analyzed and compared trough simulation calculation. The comparison shows that after the honeycomb sandwich structure was optimized, its fundamental frequency increased by 75%, the drawing force of embedded parts decreased by 50%, and the maximum acceleration response also decreased. Finally, the response under sinusoidal vibration was evaluated by test, and the results show that the optimization of the structure is reasonable and feasible, it can be the reference of other similar products.

The Spindle Structural Optimization Design of HTC3250µn NC Machine Tool Based on ANSYS

2012 ◽  
Vol 457-458 ◽  
pp. 60-64 ◽  
Author(s):  
Hua Long Xie ◽  
Hui Min Guo ◽  
Qing Bao Wang ◽  
Yong Xian Liu
Keyword(s):  
Machine Tool ◽  
Optimization Design ◽  
Optimization Method ◽  
Optimized Design ◽  
Nc Machine Tool ◽  
Mathematical Mode ◽  
Design Variables ◽  
Before And After ◽  
Nc Machine ◽  
Important Significance

The optimization of spindle has important significance. The optimization method based on ANSYS is introduced and spindle mathematical mode of HTC3250µn NC machine tool is given. By scanning of design variables, the main optimized design variables are determined. The single objective and multi-objective optimizations are done. In the end, the main size comparison of spindle before and after optimization is given.

3D Dynamic Simulation and Optimization of Mammoth Desiliconization Converter for High-Quality Stainless Steel

2013 ◽  
Vol 787 ◽  
pp. 454-460
Author(s):  
Da Zhi Zhang ◽  
Zheng Yi Jiang
Keyword(s):  
Dynamic Simulation ◽  
Three Dimensional ◽  
Simulation Software ◽  
Molten Iron ◽  
Optimized Design ◽  
Simulation And Optimization ◽  
Bottom Blow ◽  
Technical Requirements ◽  
Significant Difference ◽  
Bottom Blowing

A three-dimensional dynamic simulation model of the molten iron flow field was presented in the paper with Fluent simulation software. Different operating parameters combinations, including different oxygen lance locations, oxygen pressures and oxygen flows, different arrangements of bottom blowing holes, hole sizes, nitrogen pressures and nitrogen flows were studied. It is shown that the relative optimum value of the distance from top-blow gun to the molten iron surface is 1500 mm, and bottom blowing hole diameter is 20mm, there is no significant difference of the blowing effects found when comparing single ring arrangement with double rings arrangement of 8 bottom blowing holes with only bottom-blow, and the bottom-blow of inner ring is disturbed by top-blow when top and bottom combined blow. Optimized design results have been applied to the design and manufacture of the actual converter, the converter has been successfully used in plant. The actual production results indicate that the desiliconization precision can reach 0.05%, the content of Cr2O3 in the slag after reduction can be less than 2%, better than the technical requirements of 3%, and improve the recovery rate of the chromium. Compared with traditional desiliconization method by iron gutter and iron ladle, desiliconization by converter does not use compression residue agents and reduce the amount of desiliconization agents and slag, and improve the desiliconization efficiency and productivity.

Analysis, Simulation and Optimization of the Milking Process in a Cowshed for the Production of Parmigiano Reggiano

2016 ◽  
Vol 12 (9) ◽  
pp. 851-865 ◽  
Author(s):  
Mattia Armenzoni ◽  
Eleonora Bottani ◽  
Marta Rinaldi ◽  
Sergio Amedeo Gallo ◽  
Roberto Montanari
Keyword(s):  
Discrete Event Simulation ◽  
Discrete Event ◽  
Real Data ◽  
Simulation And Optimization ◽  
Event Simulation ◽  
Discrete Event Simulation Model ◽  
Before And After ◽  
Real Performance ◽  
Time Required ◽  
Parmigiano Reggiano

Abstract The aim of this study is to optimize the milking process of a cowshed, located near Parma (Italy), which provides milk to some dairy companies, for the production of Parmigiano Reggiano cheese. The ultimate goal of the analysis is to reduce the time required for milking operations, thus optimizing the whole management of the farm processes. A discrete-event simulation model is designed under Simul8™ to reproduce the main processes of the cowshed and the movements of the animals inside the cowshed, before and after milking. The model exploits real data collected from the direct observation of the farm and is validated by comparing the results provided with the real performance of the milking activities. Then, it is used to test two new configurations of the cowshed layout and to assess their performance, in terms of the total time required for milking. Interesting savings in the total milking time are found.

Simulation and Optimization Design of Gasoline Engine Exhaust Muffler

2014 ◽  
Vol 599-601 ◽  
pp. 451-454
Author(s):  
Jie Cai ◽  
Yu Hong Long ◽  
Huai Hui Du ◽  
Jun Liang Liu ◽  
Wen Shang Li
Keyword(s):  
Simulation Model ◽  
Optimization Design ◽  
Gasoline Engine ◽  
Working Process ◽  
Engine Exhaust ◽  
Simulation And Optimization ◽  
Related Data ◽  
Simulation Calculation ◽  
Exhaust Noise ◽  
Simulation Results

The coupling simulation model of a gasoline engine’s working process and muffler is established by GT-Power software, and related data are obtained by simulation calculation. It is found that the calculating results are consistent with the actual data, which validates the correctness of this simulation model. Through the analysis processing of the coupling simulation model, it is put forward an improved case for the exhaust muffler in this paper. Based on a local optimization, the simulation results show that the insertion loss of muffler has improved markedly, the exhaust noise values decreased and indicated power engine remain basically unchanged.

Analyzing Drive Cycles for Hybrid Electric Vehicle Simulation and Optimization

2015 ◽  
Vol 137 (4) ◽  
Author(s):  
Benjamin M. Geller ◽  
Thomas H. Bradley
Keyword(s):  
Hybrid Electric Vehicle ◽  
Energy Use ◽  
Computational Cost ◽  
Vehicle Design ◽  
Optimized Design ◽  
Drive Cycle ◽  
Vehicle Performance ◽  
Design And Optimization ◽  
Simulation And Optimization ◽  
Vehicle Simulation

System design tools including simulation and component optimization are an increasingly important component of the vehicle design process, placing more emphasis on early stages of design to reduce redesign and enable more robust design. This study focuses on the energy use and power management simulations used in vehicle design and optimization. Vehicle performance is most often evaluated in simulation, physical testing, and certification using drive cycle cases (also known as dynamometer schedules or drive schedules). In vehicle optimization studies, the information included in each drive cycle has been shown to influence the attributes of the optimized vehicle, and including more drive cycles in simulation optimizations has been shown to improve the robustness of the optimized design. This paper aims to quantitatively understand the effect of drive cycles on optimization in vehicle design and to specify drive cycles that can lead to robust vehicle design with minimal simulation. Two investigations are performed in service of this objective; investigation 1 tests how different combinations of drive cycles affect optimized vehicle performance and design variables (DV); investigation 2 evaluates the use of stochastic drive cycles for improving the robustness of vehicle designs without adding computational cost to the design and optimization process.

Using Adams/Car and Insight in Simulation and Optimization on Guiding Mechanism of Air Front-Suspension

2014 ◽  
Vol 635-637 ◽  
pp. 381-384
Author(s):  
Meng Li
Keyword(s):  
Steady State ◽  
Model Parameters ◽  
Front Suspension ◽  
Simulation And Optimization ◽  
Alignment Parameter ◽  
Before And After ◽  
Wheel Alignment ◽  
Optimum Model

A mode of air front-suspension is established, and the effect of alignment parameters with the bump of the wheels is analyzed. The Guiding Mechanism of Air Front- suspension is optimized by using Insight, The optimum model parameters is obtained. It is concluded by comparing the wheel alignment parameter before and after optimization that After optimization guide mechanism makes the vehicle has better steady state characteristics.

HUMAN SENSORY EVALUATION OF VIBRATIONS INSIDE TALL BUILDINGS

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Chihiro Suzuki ◽  
Takashige Ishikawa
Keyword(s):  
Sensory Evaluation ◽  
Random Vibration ◽  
Tall Buildings ◽  
Sinusoidal Vibration ◽  
Maximum Acceleration ◽  
Long Period ◽  
Fast Fourier Transform Analysis ◽  
Wide Range ◽  
The Relationship ◽  
Frequent Problem

Long-period vibrations felt by residents or workers in tall buildings due to wind or earthquake are a frequent problem. Considering the fact that vibration by wind or earthquake is dynamic, we investigated a wide range of random vibration, including long-period vibration. We focused on sensory evaluation and investigated the relationship between perception or psychological quantity (magnitude of anxiety or discomfort) and random vibration. In this study, we performed experiments using actual vibrations in detached houses for original waveforms. The results show the possibility of estimation using the predominant frequency in a fast Fourier transform analysis and maximum acceleration for perception and psychological evaluation. Random vibration is hardly perceived compared with sinusoidal vibration, and anxiety or discomfort is hardly felt. We determined a range in which subjects perceive random vibration but do not feel anxiety or discomfort.

Simulation and Optimization for the Cooling System of Heavy Vehicle Engine

2014 ◽  
Vol 599-601 ◽  
pp. 455-459
Author(s):  
Wen Shang Li ◽  
Yu Hong Long ◽  
Jun Liang Liu ◽  
Jie Cai ◽  
Xin Zhan
Keyword(s):  
Cooling System ◽  
System Model ◽  
Heavy Vehicle ◽  
Wind Tunnel Testing ◽  
Simulation And Optimization ◽  
Engine Cooling ◽  
Vehicle Engine ◽  
Simulation Calculation ◽  
Testing Data ◽  
The Cost

An engine cooling system of heavy vehicle was used as a research object in this thesis. Engine system model was designed with KULI software according to wind tunnel testing data of heat exchanger provided by supplier. Simulation calculation provides optimization program based on the results. The result is that it can simulate calculation with KULI software, in the early design on a cooling system of heavy vehicle engine. The study provides a theoretical basis for the design of a cooling system of heavy vehicle engine, improve the efficiency and save the cost.

Simulation and Optimization Research on Ignition Timing of the Engine Burning Gasohol

2011 ◽  
Vol 97-98 ◽  
pp. 821-824
Author(s):  
Zhi Jie Li ◽  
Shu Hua Cui ◽  
Xi Gang Song ◽  
Ya Ni Fan
Keyword(s):  
Working Condition ◽  
Power Model ◽  
Ignition Timing ◽  
Simulation And Optimization ◽  
Simulation Calculation ◽  
The Way

In this paper, the advanced ignition angle ,which gained from experiment on engine combusting gasohol , is taken as a base value. Based on it , a change interval can be determined, and the interval range will be divided into several values. Put each of them into the GT-power model to conduct simulation calculation, get the optimal advanced ignition angle at different working condition. At last, the way to optimize the advanced ignition angle is found.

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